Mersen HP10J300EI Photovoltaic fuse gPV 1000VDC UL 300A With EI Indicator With Blade For Clip or Bolted
Alternate Item Number: HP10J300EI
UPC: 782001448448
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Designed for 1000VDC photovoltaic systems
- 300A current rating for high-power applications
- EI indicator for clear fault indication
- Blade connection for clip or bolted mounting
- Low minimum breaking capacity (1.35x rated current)
Specifications
AC Voltage Rating | 600 V |
Amperage Rating | 300 A |
Application | Re-combiner box (sub-combiner, array combiner, master combiner) applications Inverter DC input Battery charge controllers |
Body Material | GMG |
Brand Name | Mersen |
Class | Photovoltaic |
Connection | Blade |
Connection Material | Silver-Plated Copper |
DC Voltage Rating | 1000 V |
Fuse Class | Photovoltaic |
Interrupt Rating | 200 kA |
Mounting | Clip or Bolted |
Mounting | Bolted;Clip |
Size | 7.13 x 2.13 in |
Size | 181.102 x 54.102 mm |
Special Features | UL Listed to standard 2579 – Photovoltaic Fuses Smallest available footprint in the industry Enlarged mounting holes Low fault current interrupting capability Durable construction for enhanced system longevity Temperature cycle withstand capability Guaranteed operation at temperature extremes Blown fuse indicator options available (EI option) 200A to 400A available in NH3 mounting |
Standard | UL listed to UL listed to Standard 248 File E333668 (70A to 600A) File E2137 (70A to 400A) CSA Component Certified C22.2 (70A to 400A) |
Sub Brand | Helio Protection |
Type | Photovoltaic Fuses UL |
Type | Photovoltaic Fuses |
Type Of Indicators | EI Indicator |
Voltage Rating | 1000 VDC |
Package Dimensions (L x W x H) | 7.13 in x 2.13 in x 2.13 in |
Package Dimensions (L x W x H) | 181.102 mm x 54.102 mm x 54.102 mm |
Package Weight (Imperial) | 1.850 lb |
Package Weight (Metric) | 0.839 kg |

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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.Frequently Asked Questions
What is the HP10J fuse series designed for?
The HP10J photovoltaic (PV) fuse series is designed for DC Recombiner Boxes to protect 1000VDC photovoltaic systems.
What is the voltage rating for the HP10J fuse series?
The HP10J fuse series is rated for 1000VDC and also 600VAC.
What is the current rating range for the HP10J fuse series?
The HP10J fuse series has current ratings ranging from 70A to 600A.
What is the interrupting rating (I.R.) of the HP10J fuse?
The interrupting rating is 65kA @ 1000VDC and 200kA @ 600VAC.
What is the minimum breaking capacity (MBC) of the HP10J fuse?
The minimum breaking capacity is 1.35 times the fuse rated current value.
What standards is the HP10J fuse UL listed to?
The HP10J fuse is UL listed to standard 2579 (70A to 600A) and standard 248 (70A to 400A).
Are there options for blown fuse indication on the HP10J fuse?
Yes, blown fuse indicator options are available, indicated by the 'EI' option in the catalog number.
What are the dimensions for the Class J PV Fuse (70-200A, 1000V DC)?
The dimensions are 3.00 inches in height, 5.75 inches in width, and 1.13 inches in depth.
What are the dimensions for the Class J PV Fuse (250-400A, 1000V DC)?
The dimensions are 7.13 inches in height, 5.25 inches in width, and 3.38 inches in depth.
What are the dimensions for the Class J PV Fuse (450-600A, 1000V DC)?
The dimensions are 7.13 inches in height, 5.25 inches in width, and 3.38 inches in depth.
Frequently Asked Questions about Mersen
What industries and applications are Mersen products used for?
Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.
What are the main product lines offered by Mersen?
Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.
What are the key features of Mersen products?
Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.
What environmental ratings do Mersen products have?
Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.
What accessories are available for Mersen products?
Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.
How are Mersen products typically installed?
Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.
What certifications and standards do Mersen products comply with?
Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.
What technical support does Mersen offer?
Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.











